#include <TSToSCAssociatorByEnergyScoreImpl.h>

Inheritance diagram for TSToSCAssociatorByEnergyScoreImpl:

Public Member Functions
hgcal::RecoToSimCollectionTracksters	associateRecoToSim (const edm::Handle< ticl::TracksterCollection > &tCH, const edm::Handle< reco::CaloClusterCollection > &lCCH, const edm::Handle< SimClusterCollection > &sCCH) const override
	Associate a Trackster to SimClusters. More...

hgcal::SimToRecoCollectionTracksters	associateSimToReco (const edm::Handle< ticl::TracksterCollection > &tCH, const edm::Handle< reco::CaloClusterCollection > &lCCH, const edm::Handle< SimClusterCollection > &sCCH) const override
	Associate a SimCluster to Tracksters. More...

	TSToSCAssociatorByEnergyScoreImpl (edm::EDProductGetter const &, bool, std::shared_ptr< hgcal::RecHitTools >, const std::unordered_map< DetId, const HGCRecHit * > *)

Public Member Functions inherited from hgcal::TracksterToSimClusterAssociatorBaseImpl
	TracksterToSimClusterAssociatorBaseImpl ()
	Constructor. More...

virtual	~TracksterToSimClusterAssociatorBaseImpl ()
	Destructor. More...

Private Member Functions
hgcal::association	makeConnections (const edm::Handle< ticl::TracksterCollection > &tCH, const edm::Handle< reco::CaloClusterCollection > &lCCH, const edm::Handle< SimClusterCollection > &sCCH) const

Private Attributes
const bool	hardScatterOnly_

const std::unordered_map< DetId, const HGCRecHit * > *	hitMap_

unsigned	layers_

const edm::EDProductGetter *	productGetter_

std::shared_ptr< hgcal::RecHitTools >	recHitTools_

Detailed Description

Definition at line 40 of file TSToSCAssociatorByEnergyScoreImpl.h.

Constructor & Destructor Documentation

◆ TSToSCAssociatorByEnergyScoreImpl()

TSToSCAssociatorByEnergyScoreImpl::TSToSCAssociatorByEnergyScoreImpl	(	edm::EDProductGetter const &	productGetter,
		bool	hardScatterOnly,
		std::shared_ptr< hgcal::RecHitTools >	recHitTools,
		const std::unordered_map< DetId, const HGCRecHit * > *	hitMap
	)

explicit

Definition at line 6 of file TSToSCAssociatorByEnergyScoreImpl.cc.

     : hardScatterOnly_(hardScatterOnly), recHitTools_(recHitTools), hitMap_(hitMap), productGetter_(&productGetter) {
   layers_ = recHitTools_->lastLayerBH();
 }

References layers_, and recHitTools_.

Member Function Documentation

◆ associateRecoToSim()

hgcal::RecoToSimCollectionTracksters TSToSCAssociatorByEnergyScoreImpl::associateRecoToSim	(	const edm::Handle< ticl::TracksterCollection > &	tCH,
		const edm::Handle< reco::CaloClusterCollection > &	lCCH,
		const edm::Handle< SimClusterCollection > &	sCCH
	)		const

overridevirtual

Associate a Trackster to SimClusters.

Reimplemented from hgcal::TracksterToSimClusterAssociatorBaseImpl.

Definition at line 483 of file TSToSCAssociatorByEnergyScoreImpl.cc.

                                                        {
   hgcal::RecoToSimCollectionTracksters returnValue(productGetter_);
   const auto& links = makeConnections(tCH, lCCH, sCCH);
  
   const auto& scsInTrackster = std::get<0>(links);
   for (size_t tsId = 0; tsId < scsInTrackster.size(); ++tsId) {
     for (auto& scPair : scsInTrackster[tsId]) {
       LogDebug("TSToSCAssociatorByEnergyScoreImpl")
           << "Trackster Id:\t" << tsId << "\tSimCluster id:\t" << scPair.first << "\tscore:\t" << scPair.second << "\n";
       // Fill AssociationMap
       returnValue.insert(edm::Ref<ticl::TracksterCollection>(tCH, tsId),  // Ref to TS
                          std::make_pair(edm::Ref<SimClusterCollection>(sCCH, scPair.first),
                                         scPair.second)  // Pair <Ref to SC, score>
       );
     }
   }
   return returnValue;
 }

References edm::AssociationMap< Tag >::insert(), electronStore::links, LogDebug, makeConnections(), and productGetter_.

◆ associateSimToReco()

hgcal::SimToRecoCollectionTracksters TSToSCAssociatorByEnergyScoreImpl::associateSimToReco	(	const edm::Handle< ticl::TracksterCollection > &	tCH,
		const edm::Handle< reco::CaloClusterCollection > &	lCCH,
		const edm::Handle< SimClusterCollection > &	sCCH
	)		const

overridevirtual

Associate a SimCluster to Tracksters.

Reimplemented from hgcal::TracksterToSimClusterAssociatorBaseImpl.

Definition at line 505 of file TSToSCAssociatorByEnergyScoreImpl.cc.

                                                        {
   hgcal::SimToRecoCollectionTracksters returnValue(productGetter_);
   const auto& links = makeConnections(tCH, lCCH, sCCH);
   const auto& tssInSimCluster = std::get<1>(links);
   for (size_t scId = 0; scId < tssInSimCluster.size(); ++scId) {
     for (auto& tsPair : tssInSimCluster[scId].tracksterIdToEnergyAndScore) {
       returnValue.insert(
           edm::Ref<SimClusterCollection>(sCCH, scId),                                // Ref to SC
           std::make_pair(edm::Ref<ticl::TracksterCollection>(tCH, tsPair.first),     // Pair <Ref to TS,
                          std::make_pair(tsPair.second.first, tsPair.second.second))  // pair <energy, score> >
       );
     }
   }
   return returnValue;
 }

References edm::AssociationMap< Tag >::insert(), electronStore::links, makeConnections(), and productGetter_.

◆ makeConnections()

hgcal::association TSToSCAssociatorByEnergyScoreImpl::makeConnections	(	const edm::Handle< ticl::TracksterCollection > &	tCH,
		const edm::Handle< reco::CaloClusterCollection > &	lCCH,
		const edm::Handle< SimClusterCollection > &	sCCH
	)		const

private

Definition at line 15 of file TSToSCAssociatorByEnergyScoreImpl.cc.

                                                        {
   // Get collections
   const auto& tracksters = *tCH.product();
   const auto& layerClusters = *lCCH.product();
   const auto& simClusters = *sCCH.product();
   auto nTracksters = tracksters.size();
  
   //There shouldn't be any SimTracks from different crossings, but maybe they will be added later.
   //At the moment there should be one SimTrack in each SimCluster.
   auto nSimClusters = simClusters.size();
   std::vector<size_t> sCIndices;
   for (unsigned int scId = 0; scId < nSimClusters; ++scId) {
     if (hardScatterOnly_ && (simClusters[scId].g4Tracks()[0].eventId().event() != 0 or
                              simClusters[scId].g4Tracks()[0].eventId().bunchCrossing() != 0)) {
       LogDebug("TSToSCAssociatorByEnergyScoreImpl")
           << "Excluding SimCluster from event: " << simClusters[scId].g4Tracks()[0].eventId().event()
           << " with BX: " << simClusters[scId].g4Tracks()[0].eventId().bunchCrossing() << std::endl;
       continue;
     }
     sCIndices.emplace_back(scId);
   }
   nSimClusters = sCIndices.size();
  
   // Initialize tssInSimCluster. To be returned outside, since it contains the
   // information to compute the SimCluster-To-Trackster score.
   // tssInSimCluster[scId]:
   hgcal::simClusterToTrackster tssInSimCluster;
   tssInSimCluster.resize(nSimClusters);
   for (unsigned int i = 0; i < nSimClusters; ++i) {
     tssInSimCluster[i].simClusterId = i;
     tssInSimCluster[i].energy = 0.f;
     tssInSimCluster[i].hits_and_fractions.clear();
   }
  
   // Fill detIdToSimClusterId_Map and update tssInSimCluster
   std::unordered_map<DetId, std::vector<hgcal::detIdInfoInCluster>> detIdToSimClusterId_Map;
   for (const auto& scId : sCIndices) {
     const auto& hits_and_fractions = simClusters[scId].hits_and_fractions();
     for (const auto& it_haf : hits_and_fractions) {
       const auto hitid = it_haf.first;
       const auto itcheck = hitMap_->find(hitid);
       if (itcheck != hitMap_->end()) {
         const auto hit_find_it = detIdToSimClusterId_Map.find(hitid);
         if (hit_find_it == detIdToSimClusterId_Map.end()) {
           detIdToSimClusterId_Map[hitid] = std::vector<hgcal::detIdInfoInCluster>();
         }
         detIdToSimClusterId_Map[hitid].emplace_back(scId, it_haf.second);
  
         const HGCRecHit* hit = itcheck->second;
         tssInSimCluster[scId].energy += it_haf.second * hit->energy();
         tssInSimCluster[scId].hits_and_fractions.emplace_back(hitid, it_haf.second);
       }
     }
   }  // end of loop over SimClusters
  
 #ifdef EDM_ML_DEBUG
   LogDebug("TSToSCAssociatorByEnergyScoreImpl")
       << "tssInSimCluster INFO (Only SimCluster filled at the moment)" << std::endl;
   for (size_t sc = 0; sc < tssInSimCluster.size(); ++sc) {
     LogDebug("TSToSCAssociatorByEnergyScoreImpl") << "For SimCluster Idx: " << sc << " we have: " << std::endl;
     LogDebug("TSToSCAssociatorByEnergyScoreImpl")
         << "\tSimClusterIdx:\t" << tssInSimCluster[sc].simClusterId << std::endl;
     LogDebug("TSToSCAssociatorByEnergyScoreImpl") << "\tEnergy:\t" << tssInSimCluster[sc].energy << std::endl;
     LogDebug("TSToSCAssociatorByEnergyScoreImpl") << "\t# of clusters:\t" << layerClusters.size() << std::endl;
     double tot_energy = 0.;
     for (auto const& haf : tssInSimCluster[sc].hits_and_fractions) {
       LogDebug("TSToSCAssociatorByEnergyScoreImpl")
           << "\tHits/fraction/energy: " << (uint32_t)haf.first << "/" << haf.second << "/"
           << haf.second * hitMap_->at(haf.first)->energy() << std::endl;
       tot_energy += haf.second * hitMap_->at(haf.first)->energy();
     }
     LogDebug("TSToSCAssociatorByEnergyScoreImpl") << "\tTot Sum haf: " << tot_energy << std::endl;
     for (auto const& ts : tssInSimCluster[sc].tracksterIdToEnergyAndScore) {
       LogDebug("TSToSCAssociatorByEnergyScoreImpl")
           << "\ttsIdx/energy/score: " << ts.first << "/" << ts.second.first << "/" << ts.second.second << std::endl;
     }
   }
  
   LogDebug("TSToSCAssociatorByEnergyScoreImpl") << "detIdToSimClusterId_Map INFO" << std::endl;
   for (auto const& detId : detIdToSimClusterId_Map) {
     LogDebug("TSToSCAssociatorByEnergyScoreImpl")
         << "For detId: " << (uint32_t)detId.first
         << " we have found the following connections with SimClusters:" << std::endl;
     for (auto const& sc : detId.second) {
       LogDebug("TSToSCAssociatorByEnergyScoreImpl")
           << "\tSimCluster Id: " << sc.clusterId << " with fraction: " << sc.fraction
           << " and energy: " << sc.fraction * hitMap_->at(detId.first)->energy() << std::endl;
     }
   }
 #endif
  
   // Fill detIdToLayerClusterId_Map and scsInTrackster; update tssInSimCluster
   std::unordered_map<DetId, std::vector<hgcal::detIdInfoInCluster>> detIdToLayerClusterId_Map;
   // this contains the ids of the simclusters contributing with at least one
   // hit to the Trackster. To be returned since this contains the information
   // to compute the Trackster-To-SimCluster score.
   hgcal::tracksterToSimCluster scsInTrackster;  //[tsId][scId]->(energy,score)
   scsInTrackster.resize(nTracksters);
  
   for (unsigned int tsId = 0; tsId < nTracksters; ++tsId) {
     for (unsigned int i = 0; i < tracksters[tsId].vertices().size(); ++i) {
       const auto lcId = tracksters[tsId].vertices(i);
       const auto lcFractionInTs = 1.f / tracksters[tsId].vertex_multiplicity(i);
  
       const std::vector<std::pair<DetId, float>>& hits_and_fractions = layerClusters[lcId].hitsAndFractions();
       unsigned int numberOfHitsInLC = hits_and_fractions.size();
  
       for (unsigned int hitId = 0; hitId < numberOfHitsInLC; hitId++) {
         const auto rh_detid = hits_and_fractions[hitId].first;
         const auto rhFraction = hits_and_fractions[hitId].second;
  
         const auto hit_find_in_LC = detIdToLayerClusterId_Map.find(rh_detid);
         if (hit_find_in_LC == detIdToLayerClusterId_Map.end()) {
           detIdToLayerClusterId_Map[rh_detid] = std::vector<hgcal::detIdInfoInCluster>();
         }
         detIdToLayerClusterId_Map[rh_detid].emplace_back(lcId, rhFraction);
  
         const auto hit_find_in_SC = detIdToSimClusterId_Map.find(rh_detid);
  
         if (hit_find_in_SC != detIdToSimClusterId_Map.end()) {
           const auto itcheck = hitMap_->find(rh_detid);
           const HGCRecHit* hit = itcheck->second;
           //Loops through all the simclusters that have the layer cluster rechit under study
           //Here is time to update the tssInSimCluster and connect the SimCluster with all
           //the Tracksters that have the current rechit detid matched.
           for (const auto& h : hit_find_in_SC->second) {
             //tssInSimCluster[simclusterId][layerclusterId]-> (energy,score)
             //SC_i - > TS_j, TS_k, ...
             tssInSimCluster[h.clusterId].tracksterIdToEnergyAndScore[tsId].first +=
                 lcFractionInTs * h.fraction * hit->energy();
             //TS_i -> SC_j, SC_k, ...
             scsInTrackster[tsId].emplace_back(h.clusterId, 0.f);
           }
         }
       }  // End loop over hits on a LayerCluster
     }    // End loop over LayerClusters in Trackster
   }      // End of loop over Tracksters
  
 #ifdef EDM_ML_DEBUG
   for (unsigned int tsId = 0; tsId < nTracksters; ++tsId) {
     for (const auto& lcId : tracksters[tsId].vertices()) {
       const auto& hits_and_fractions = layerClusters[lcId].hitsAndFractions();
       unsigned int numberOfHitsInLC = hits_and_fractions.size();
  
       // This vector will store, for each hit in the Layercluster, the index of
       // the SimCluster that contributed the most, in terms of energy, to it.
       // Special values are:
       //
       // -2  --> the reconstruction fraction of the RecHit is 0 (used in the past to monitor Halo Hits)
       // -3  --> same as before with the added condition that no SimCluster has been linked to this RecHit
       // -1  --> the reco fraction is >0, but no SimCluster has been linked to it
       // >=0 --> index of the linked SimCluster
       std::vector<int> hitsToSimClusterId(numberOfHitsInLC);
       // This will store the index of the SimCluster linked to the LayerCluster that has the largest number of hits in common.
       int maxSCId_byNumberOfHits = -1;
       // This will store the maximum number of shared hits between a LayerCluster and a SimCluster
       unsigned int maxSCNumberOfHitsInLC = 0;
       // This will store the index of the SimCluster linked to the LayerCluster that has the largest energy in common.
       int maxSCId_byEnergy = -1;
       // This will store the maximum number of shared energy between a LayerCluster and a SimCluster
       float maxEnergySharedLCandSC = 0.f;
       // This will store the fraction of the LayerCluster energy shared with the best(energy) SimCluster: e_shared/lc_energy
       float energyFractionOfLCinSC = 0.f;
       // This will store the fraction of the SimCluster energy shared with the Trackster: e_shared/sc_energy
       float energyFractionOfSCinLC = 0.f;
       std::unordered_map<unsigned, unsigned> occurrencesSCinLC;
       unsigned int numberOfNoiseHitsInLC = 0;
       std::unordered_map<unsigned, float> SCEnergyInLC;
  
       for (unsigned int hitId = 0; hitId < numberOfHitsInLC; hitId++) {
         const auto rh_detid = hits_and_fractions[hitId].first;
         const auto rhFraction = hits_and_fractions[hitId].second;
  
         const auto hit_find_in_SC = detIdToSimClusterId_Map.find(rh_detid);
  
         // if the fraction is zero or the hit does not belong to any SimCluster,
         // set the SimCluster Id for the hit to -1; this will
         // contribute to the number of noise hits
  
         // MR Remove the case in which the fraction is 0, since this could be a
         // real hit that has been marked as halo.
         if (rhFraction == 0.) {
           hitsToSimClusterId[hitId] = -2;
         }
         //Now check if there are SimClusters linked to this rechit of the layercluster
         if (hit_find_in_SC == detIdToSimClusterId_Map.end()) {
           hitsToSimClusterId[hitId] -= 1;
         } else {
           const auto itcheck = hitMap_->find(rh_detid);
           const HGCRecHit* hit = itcheck->second;
           auto maxSCEnergyInLC = 0.f;
           auto maxSCId = -1;
           //Loop through all the linked SimClusters
           for (const auto& h : hit_find_in_SC->second) {
             SCEnergyInLC[h.clusterId] += h.fraction * hit->energy();
             // Keep track of which SimCluster contributed the most, in terms
             // of energy, to this specific Layer Cluster.
             if (SCEnergyInLC[h.clusterId] > maxSCEnergyInLC) {
               maxSCEnergyInLC = SCEnergyInLC[h.clusterId];
               maxSCId = h.clusterId;
             }
           }
           hitsToSimClusterId[hitId] = maxSCId;
         }
       }  // End loop over hits on a LayerCluster
  
       for (const auto& c : hitsToSimClusterId) {
         if (c < 0) {
           numberOfNoiseHitsInLC++;
         } else {
           occurrencesSCinLC[c]++;
         }
       }
  
       for (const auto& c : occurrencesSCinLC) {
         if (c.second > maxSCNumberOfHitsInLC) {
           maxSCId_byNumberOfHits = c.first;
           maxSCNumberOfHitsInLC = c.second;
         }
       }
  
       for (const auto& c : SCEnergyInLC) {
         if (c.second > maxEnergySharedLCandSC) {
           maxSCId_byEnergy = c.first;
           maxEnergySharedLCandSC = c.second;
         }
       }
  
       float totalSCEnergyOnLayer = 0.f;
       if (maxSCId_byEnergy >= 0) {
         totalSCEnergyOnLayer = tssInSimCluster[maxSCId_byEnergy].energy;
         energyFractionOfSCinLC = maxEnergySharedLCandSC / totalSCEnergyOnLayer;
         if (tracksters[tsId].raw_energy() > 0.f) {
           energyFractionOfLCinSC = maxEnergySharedLCandSC / tracksters[tsId].raw_energy();
         }
       }
  
       LogDebug("TSToSCAssociatorByEnergyScoreImpl")
           << std::setw(12) << "TracksterID:\t" << std::setw(12) << "layerCluster\t" << std::setw(10) << "lc energy\t"
           << std::setw(5) << "nhits\t" << std::setw(12) << "noise hits\t" << std::setw(22) << "maxSCId_byNumberOfHits\t"
           << std::setw(8) << "nhitsSC\t" << std::setw(13) << "maxSCId_byEnergy\t" << std::setw(20)
           << "maxEnergySharedLCandSC\t" << std::setw(22) << "totalSCEnergyOnLayer\t" << std::setw(22)
           << "energyFractionOfLCinSC\t" << std::setw(25) << "energyFractionOfSCinLC\t"
           << "\n";
       LogDebug("TSToSCAssociatorByEnergyScoreImpl")
           << std::setw(12) << tsId << "\t" << std::setw(12) << lcId << "\t" << std::setw(10)
           << tracksters[tsId].raw_energy() << "\t" << std::setw(5) << numberOfHitsInLC << "\t" << std::setw(12)
           << numberOfNoiseHitsInLC << "\t" << std::setw(22) << maxSCId_byNumberOfHits << "\t" << std::setw(8)
           << maxSCNumberOfHitsInLC << "\t" << std::setw(13) << maxSCId_byEnergy << "\t" << std::setw(20)
           << maxEnergySharedLCandSC << "\t" << std::setw(22) << totalSCEnergyOnLayer << "\t" << std::setw(22)
           << energyFractionOfLCinSC << "\t" << std::setw(25) << energyFractionOfSCinLC << "\n";
     }  // End of loop over LayerClusters in Trackster
   }    // End of loop over Tracksters
  
   LogDebug("TSToSCAssociatorByEnergyScoreImpl")
       << "Improved tssInSimCluster INFO (Now containing the linked tracksters id and energy - score still empty)"
       << std::endl;
   for (size_t sc = 0; sc < tssInSimCluster.size(); ++sc) {
     LogDebug("TSToSCAssociatorByEnergyScoreImpl") << "For SimCluster Idx: " << sc << " we have: " << std::endl;
     LogDebug("TSToSCAssociatorByEnergyScoreImpl")
         << "    SimClusterIdx: " << tssInSimCluster[sc].simClusterId << std::endl;
     LogDebug("TSToSCAssociatorByEnergyScoreImpl") << "\tEnergy:\t" << tssInSimCluster[sc].energy << std::endl;
     double tot_energy = 0.;
     for (auto const& haf : tssInSimCluster[sc].hits_and_fractions) {
       LogDebug("TSToSCAssociatorByEnergyScoreImpl")
           << "\tHits/fraction/energy: " << (uint32_t)haf.first << "/" << haf.second << "/"
           << haf.second * hitMap_->at(haf.first)->energy() << std::endl;
       tot_energy += haf.second * hitMap_->at(haf.first)->energy();
     }
     LogDebug("TSToSCAssociatorByEnergyScoreImpl") << "\tTot Sum haf: " << tot_energy << std::endl;
     for (auto const& ts : tssInSimCluster[sc].tracksterIdToEnergyAndScore) {
       LogDebug("TSToSCAssociatorByEnergyScoreImpl")
           << "\ttsIdx/energy/score: " << ts.first << "/" << ts.second.first << "/" << ts.second.second << std::endl;
     }
   }
  
   LogDebug("TSToSCAssociatorByEnergyScoreImpl") << "Improved detIdToSimClusterId_Map INFO" << std::endl;
   for (auto const& sc : detIdToSimClusterId_Map) {
     LogDebug("TSToSCAssociatorByEnergyScoreImpl")
         << "For detId: " << (uint32_t)sc.first
         << " we have found the following connections with SimClusters:" << std::endl;
     for (auto const& sclu : sc.second) {
       LogDebug("TSToSCAssociatorByEnergyScoreImpl")
           << "  SimCluster Id: " << sclu.clusterId << " with fraction: " << sclu.fraction
           << " and energy: " << sclu.fraction * hitMap_->at(sc.first)->energy() << std::endl;
     }
   }
 #endif
  
   // Update scsInTrackster; compute the score Trackster-to-SimCluster,
   // together with the returned AssociationMap
   for (unsigned int tsId = 0; tsId < nTracksters; ++tsId) {
     // The SimClusters contributing to the Trackster's LayerClusters should already be unique.
     // find the unique SimClusters id contributing to the Trackster's LayerClusters
     std::sort(scsInTrackster[tsId].begin(), scsInTrackster[tsId].end());
     auto last = std::unique(scsInTrackster[tsId].begin(), scsInTrackster[tsId].end());
     scsInTrackster[tsId].erase(last, scsInTrackster[tsId].end());
  
     // If a reconstructed Trackster has energy 0 but is linked to a
     // SimCluster, assigned score 1
     if (tracksters[tsId].raw_energy() == 0. && !scsInTrackster[tsId].empty()) {
       for (auto& scPair : scsInTrackster[tsId]) {
         scPair.second = 1.;
         LogDebug("TSToSCAssociatorByEnergyScoreImpl")
             << "TracksterId:\t " << tsId << "\tSC id:\t" << scPair.first << "\tscore\t " << scPair.second << "\n";
       }
       continue;
     }
  
     float invTracksterEnergyWeight = 0.f;
     for (unsigned int i = 0; i < tracksters[tsId].vertices().size(); ++i) {
       const auto lcId = tracksters[tsId].vertices(i);
       const auto lcFractionInTs = 1.f / tracksters[tsId].vertex_multiplicity(i);
  
       const auto& hits_and_fractions = layerClusters[lcId].hitsAndFractions();
       // Compute the correct normalization
       for (auto const& haf : hits_and_fractions) {
         invTracksterEnergyWeight += (lcFractionInTs * haf.second * hitMap_->at(haf.first)->energy()) *
                                     (lcFractionInTs * haf.second * hitMap_->at(haf.first)->energy());
       }
     }
     invTracksterEnergyWeight = 1.f / invTracksterEnergyWeight;
  
     for (unsigned int i = 0; i < tracksters[tsId].vertices().size(); ++i) {
       const auto lcId = tracksters[tsId].vertices(i);
       const auto lcFractionInTs = 1.f / tracksters[tsId].vertex_multiplicity(i);
  
       const auto& hits_and_fractions = layerClusters[lcId].hitsAndFractions();
       unsigned int numberOfHitsInLC = hits_and_fractions.size();
       for (unsigned int i = 0; i < numberOfHitsInLC; ++i) {
         DetId rh_detid = hits_and_fractions[i].first;
         float rhFraction = hits_and_fractions[i].second * lcFractionInTs;
  
         const bool hitWithSC = (detIdToSimClusterId_Map.find(rh_detid) != detIdToSimClusterId_Map.end());
  
         const auto itcheck = hitMap_->find(rh_detid);
         const HGCRecHit* hit = itcheck->second;
         float hitEnergyWeight = hit->energy() * hit->energy();
  
         for (auto& scPair : scsInTrackster[tsId]) {
           float scFraction = 0.f;
           if (hitWithSC) {
             const auto findHitIt = std::find(detIdToSimClusterId_Map[rh_detid].begin(),
                                              detIdToSimClusterId_Map[rh_detid].end(),
                                              hgcal::detIdInfoInCluster{scPair.first, 0.f});
             if (findHitIt != detIdToSimClusterId_Map[rh_detid].end())
               scFraction = findHitIt->fraction;
           }
           scPair.second +=
               (rhFraction - scFraction) * (rhFraction - scFraction) * hitEnergyWeight * invTracksterEnergyWeight;
 #ifdef EDM_ML_DEBUG
           LogDebug("TSToSCAssociatorByEnergyScoreImpl")
               << "rh_detid:\t" << (uint32_t)rh_detid << "\ttracksterId:\t" << tsId << "\t"
               << "rhfraction,scFraction:\t" << rhFraction << ", " << scFraction << "\t"
               << "hitEnergyWeight:\t" << hitEnergyWeight << "\t"
               << "current score:\t" << scPair.second << "\t"
               << "invTracksterEnergyWeight:\t" << invTracksterEnergyWeight << "\n";
 #endif
         }
       }  // End of loop over Hits within a LayerCluster
     }    // End of loop over LayerClusters in Trackster
  
 #ifdef EDM_ML_DEBUG
     if (scsInTrackster[tsId].empty())
       LogDebug("TSToSCAssociatorByEnergyScoreImpl") << "trackster Id:\t" << tsId << "\tSC id:\t-1"
                                                     << "\tscore\t-1\n";
 #endif
   }  // End of loop over Tracksters
  
   // Compute the SimCluster-To-Trackster score
   for (const auto& scId : sCIndices) {
     float invSCEnergyWeight = 0.f;
  
     const unsigned int SCNumberOfHits = tssInSimCluster[scId].hits_and_fractions.size();
     if (SCNumberOfHits == 0)
       continue;
 #ifdef EDM_ML_DEBUG
     int tsWithMaxEnergyInSC = -1;
     //energy of the most energetic TS from all that were linked to SC
     float maxEnergyTSinSC = 0.f;
     float SCenergy = tssInSimCluster[scId].energy;
     //most energetic TS from all TSs linked to SC over SC energy.
     float SCEnergyFractionInTS = 0.f;
     for (const auto& ts : tssInSimCluster[scId].tracksterIdToEnergyAndScore) {
       if (ts.second.first > maxEnergyTSinSC) {
         maxEnergyTSinSC = ts.second.first;
         tsWithMaxEnergyInSC = ts.first;
       }
     }
     if (SCenergy > 0.f)
       SCEnergyFractionInTS = maxEnergyTSinSC / SCenergy;
  
     LogDebug("TSToSCAssociatorByEnergyScoreImpl")
         << std::setw(12) << "simcluster\t" << std::setw(15) << "sc total energy\t" << std::setw(15)
         << "scEnergyOnLayer\t" << std::setw(14) << "SCNhitsOnLayer\t" << std::setw(18) << "tsWithMaxEnergyInSC\t"
         << std::setw(15) << "maxEnergyTSinSC\t" << std::setw(20) << "SCEnergyFractionInTS"
         << "\n";
     LogDebug("TSToSCAssociatorByEnergyScoreImpl")
         << std::setw(12) << scId << "\t" << std::setw(15) << simClusters[scId].energy() << "\t" << std::setw(15)
         << SCenergy << "\t" << std::setw(14) << SCNumberOfHits << "\t" << std::setw(18) << tsWithMaxEnergyInSC << "\t"
         << std::setw(15) << maxEnergyTSinSC << "\t" << std::setw(20) << SCEnergyFractionInTS << "\n";
 #endif
     // Compute the correct normalization
     for (auto const& haf : tssInSimCluster[scId].hits_and_fractions) {
       invSCEnergyWeight += std::pow(haf.second * hitMap_->at(haf.first)->energy(), 2);
     }
     invSCEnergyWeight = 1.f / invSCEnergyWeight;
  
     for (unsigned int i = 0; i < SCNumberOfHits; ++i) {
       auto& sc_hitDetId = tssInSimCluster[scId].hits_and_fractions[i].first;
       auto& scFraction = tssInSimCluster[scId].hits_and_fractions[i].second;
  
       bool hitWithLC = false;
       if (scFraction == 0.f)
         continue;  // hopefully this should never happen
       const auto hit_find_in_LC = detIdToLayerClusterId_Map.find(sc_hitDetId);
       if (hit_find_in_LC != detIdToLayerClusterId_Map.end())
         hitWithLC = true;
       const auto itcheck = hitMap_->find(sc_hitDetId);
       const HGCRecHit* hit = itcheck->second;
       float hitEnergyWeight = hit->energy() * hit->energy();
       for (auto& tsPair : tssInSimCluster[scId].tracksterIdToEnergyAndScore) {
         unsigned int tsId = tsPair.first;
         float tsFraction = 0.f;
  
         for (unsigned int i = 0; i < tracksters[tsId].vertices().size(); ++i) {
           const auto lcId = tracksters[tsId].vertices(i);
           const auto lcFractionInTs = 1.f / tracksters[tsId].vertex_multiplicity(i);
  
           if (hitWithLC) {
             const auto findHitIt = std::find(detIdToLayerClusterId_Map[sc_hitDetId].begin(),
                                              detIdToLayerClusterId_Map[sc_hitDetId].end(),
                                              hgcal::detIdInfoInCluster{lcId, 0.f});
             if (findHitIt != detIdToLayerClusterId_Map[sc_hitDetId].end())
               tsFraction = findHitIt->fraction * lcFractionInTs;
           }
           tsPair.second.second +=
               (tsFraction - scFraction) * (tsFraction - scFraction) * hitEnergyWeight * invSCEnergyWeight;
 #ifdef EDM_ML_DEBUG
           LogDebug("TSToSCAssociatorByEnergyScoreImpl")
               << "SCDetId:\t" << (uint32_t)sc_hitDetId << "\tTracksterId:\t" << tsId << "\t"
               << "tsFraction, scFraction:\t" << tsFraction << ", " << scFraction << "\t"
               << "hitEnergyWeight:\t" << hitEnergyWeight << "\t"
               << "current score:\t" << tsPair.second.second << "\t"
               << "invSCEnergyWeight:\t" << invSCEnergyWeight << "\n";
 #endif
         }  // End of loop over Trackster's LayerClusters
       }    // End of loop over Tracksters linked to hits of this SimCluster
     }      // End of loop over hits of SimCluster on a Layer
 #ifdef EDM_ML_DEBUG
     if (tssInSimCluster[scId].tracksterIdToEnergyAndScore.empty())
       LogDebug("TSToSCAssociatorByEnergyScoreImpl") << "SC Id:\t" << scId << "\tTS id:\t-1 "
                                                     << "\tscore\t-1\n";
  
     for (const auto& tsPair : tssInSimCluster[scId].tracksterIdToEnergyAndScore) {
       LogDebug("TSToSCAssociatorByEnergyScoreImpl")
           << "SC Id: \t" << scId << "\t TS id: \t" << tsPair.first << "\t score \t" << tsPair.second.second
           << "\t shared energy:\t" << tsPair.second.first << "\t shared energy fraction:\t"
           << (tsPair.second.first / SCenergy) << "\n";
     }
 #endif
   }  // End loop over SimCluster indices
   return {scsInTrackster, tssInSimCluster};
 }